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XkbResizeDeviceButtonActions

Section: XKB FUNCTIONS (3)
Updated: libX11 1.6.3
Index Return to Main Contents
 

NAME

XkbResizeDeviceButtonActions - Allocate additional space for button actions in an XkbDeviceInfoRec structure  

SYNOPSIS

Status XkbResizeDeviceButtonActions (XkbDeviceInfoPtr device_info, unsigned int new_total);
     
 

ARGUMENTS

- device_info
structure in which to allocate button actions
- new_total
new total number of button actions needed
 

DESCRIPTION

XkbResizeDeviceButtonActions reallocates space, if necessary, to make sure there is room for a total of new_total button actions in the device_info structure. Any new entries allocated are zeroed. If successful, XkbResizeDeviceButtonActions returns Success. If new_total is zero, all button actions are deleted, device_info->num_btns is set to zero, and device_info->btn_acts is set to NULL. If device_info is invalid or new_total is greater than 255, BadValue is returned. If a memory allocation failure occurs, a BadAlloc is returned.

To free an XkbDeviceInfoRec structure, use XkbFreeDeviceInfo.  

STRUCTURES

Information about X Input Extension devices is transferred between a client program and the Xkb extension in an XkbDeviceInfoRec structure:


    typedef struct {
        char *               name;          /* name for device */
        Atom                 type;          /* name for class of devices */
        unsigned short       device_spec;   /* device of interest */
        Bool                 has_own_state; /* True=>this device has its own state */
        unsigned short       supported;     /* bits indicating supported capabilities */
        unsigned short       unsupported;   /* bits indicating unsupported capabilities */
        unsigned short       num_btns;      /* number of entries in btn_acts */
        XkbAction *          btn_acts;      /* button actions */
        unsigned short       sz_leds;       /* total number of entries in LEDs vector */
        unsigned short       num_leds;      /* number of valid entries in LEDs vector */
        unsigned short       dflt_kbd_fb;   /* input extension ID of default (core kbd) indicator */
        unsigned short       dflt_led_fb;   /* input extension ID of default indicator feedback */
        XkbDeviceLedInfoPtr  leds;          /* LED descriptions */
    } XkbDeviceInfoRec, *XkbDeviceInfoPtr;
 

DIAGNOSTICS

BadAlloc
Unable to allocate storage
BadValue
An argument is out of range
 

SEE ALSO

XkbFreeDeviceInfo(3)


 

Index

NAME
SYNOPSIS
ARGUMENTS
DESCRIPTION
STRUCTURES
DIAGNOSTICS
SEE ALSO


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